Pakistan Stock Exchange (PSX) experienced the worst downturn at the beginning of the last day of the business week as the PSX-100 index plunged and lost two benchmarks of 72,000 and 73,000.
The PSX-100 index reached to 7,1090.
On the instructions of the IMF, the possibility of a new tax of Rs2 trillion in the budget took the market down.
Brokers said there is a report of increasing the capital gain tax on the income of shares in the budget.